Our visiting snowy owl is making a great recovery. X-rays were taken the other day and the break is healing well. The wing wrap was removed, but the pin is being left in for a little longer time. It seems he didn't like having the wing wrap on and was pulling at it. So we took it off so he wouldn't injure the wing any more. We'll x-ray again in about a week and then decide if it's time to pull the pin out.
There seems to be a snowy owl invasion in the lower 48 states. The only written article I've found though has been on Birdchick blog. She reports a sort of irruption in Minnesota and Wisconsin. She also has a nice shot of a snowy taken at their airport.
The Snowy Owl is highly nomadic. During periods of lemming and vole population crashes in the Arctic, or excessive cold and snow in winter, mass movements of Snowy Owls occur into southern Canada and northern United States. These invasions occur every 3 to 5 years, but are highly irregular. Adult females stay furthest north while immature males move furthest south during these incursions.
Here's a map of the range of the snowy owl. During southward movements they appear along lakeshores, marine coastlines, marshes, and even roost on buildings in cities and towns. So, if your living in the most southern portion of it's range in the U.S., keep an eye out for a snowy. They could be visiting you this winter.